Microsoft 365 Copilot's Business Chat
7 CVEs tracked. None of them is in CISA KEV.
This hub aggregates every CVE we track for Microsoft 365 Copilot's Business Chat. Use it to gauge the current risk picture and drill into individual advisories.
Microsoft 365 Copilot's Business Chat CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 0 |
| 2024-12 | 0 |
| 2025-01 | 0 |
| 2025-02 | 0 |
| 2025-03 | 0 |
| 2025-04 | 0 |
| 2025-05 | 0 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 2 |
| 2025-09 | 0 |
| 2025-10 | 2 |
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 2 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 1 |
Severity
How the 7 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical2
- High4
- Medium1
Latest CVEs
The 7 most recently published vulnerabilities affecting Microsoft 365 Copilot's Business Chat.
- CVE-2026-78501Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability7.4
- CVE-2026-26129M365 Copilot Information Disclosure Vulnerability7.5
- CVE-2026-26164M365 Copilot Information Disclosure Vulnerability7.5
- CVE-2025-59286Copilot Information Disclosure Vulnerability9.3
- CVE-2025-59272Copilot Information Disclosure Vulnerability9.3
- CVE-2025-53787Microsoft 365 Copilot BizChat Information Disclosure Vulnerability8.2
- CVE-2025-53774Microsoft 365 Copilot BizChat Information Disclosure Vulnerability6.5
Product grouping is registry-driven, with AI assist and human review. How it works